Loom



E. F. BALDWIN Jan. 8, 1929.

LOOM

Original Filed Feb. 18, 1925 2 Sheets-Sheet inve,

Jan. 8, 1929.

E. F. BALDWIN LOOM Original Filed Feb. 18, 1925 2 Sheets-Sheet Mmm w 2www NS H f Patented Jan. 8, 1929. f

UNITE testare EARL n. BALDWIN, or GARDNER, MASSACHUSETTS, AssieNoR ToAMERTCAN FIBRE CORPORATION, or GARDNER, MASSACHUSETTS, A .CoRroRATroN orMASSACHU- i SETTS.

LOOM.

Original application filed February 18, 1925, Serial No. 9,958. Dividedand this application led May 2.8,

19a?. serial No. 194,870. l

This invention relates to looms; more particularly to looms for weavingrelatively heavy stiff strand material7 such, for example, as may bemade from strips ofV paper formed into cord or twine7 this applicationcovering subject matter divided out from my application Serial No. 9,958filed February 18, 1925 for looms and relating more particularly tomeans for cutting Cif the picks and holding them in proper position inthe fabric.; For a more complete understanding of this inventionreference may be had t'o the accompanyingdrawings in which Figure 1 is arighty end elevation of the loom. f

Figure 2 is a detail in perspective showing means for holding one end ofthe pick in the fabric.

Figure 3 is a transverse section parallel to Figure 1 through anintermediate portion of the loom.

Referring to these figures, each warp strand passes about a tensiondevice indicated generally at A, through a shedding mechanism indicatedat B, and through a filling laying mechanism at C, where the fillingstrands are woven to form with the warp strands the desired fabric. VThedetail constructions of these various mechanisms is fully described inthe parent application hereinbefore referred to and will not bedescribed herein, except in so far as it may be necessary or desirableto afford a clearer understanding of the subject matter herein presentedand claimed.

The shredding mechanism comprises the harness frames 40 and 41 which aremoved up and down by eccentric straps 4S on eccentrics xed to the shaft49. Preferably the harness frames are arranged in two pairs positionedend to end and moved out of time with each other, as disclosed in theparent application hereinbefore referred to, to produce progressiveshedding between the center and sides of the fabric.

A lling laying mechanism C comprises a lay having a reed 61' extendingthereacross at its upper end. Fixed to the reedr is a pair of slottedplates shaped to detine with the reed a substantially channelshapedguide-way 67 for the passage'of a pick-laying member carrying Vasuitable vstrand gripping device extending outwardly between theadjacent edges of the plates 65.

After each pick strand has been laid the lay is given a. forward motionin order that 121 carries a cam follower 122 which enn gages a cam slot123 in a cam member 124C which may be fixedy to one face of a gear 125.In order to hold the cam followers 122 1n proper position relative tothe cams, the rear ends of the links 121 are suspended on link hangers135, each of which is pivote'd as on a stub shaft 136 projecting fromonev face of a ybracket 137 fixed to the machine. The shaft 49actuating'the harness frames is also driven from ther shaft127 as byintermeshing gears 140 and 141 ixed on these respective shafts. As showneach of the gears 125 is fixed to a shaft and mesheswith a gear 126carried by a mainshaft 127 extending across the machine. As shown bestin Figure '1, one end of the shaft 127' may havefixed thereon a wormwheel 128A with which engages va worm 129 carried by a jack shaft 130.rThis jackshaft may be coupled, as by means of a sliding clutch-131,

to the shaft 132 of a driving motor 133.y The forward movement of thelay, it is cut o' n at the side of the fabric from which it was drawnin. v,This cutting mechanism comprises a pair of blades andg166. Theblade 165 is mounted in fixed position while the blade 166 is pivoted at167 thereto. i This blade 166 has extending from its lower portion ,afinger 168 which is positioned in the path of movement of the link 121in such a manner that as the lay moves forwardly at each beating upmotion it strikes the finger -168 and rocks the blade 166 down- 'wardly7bringing itsl cuttingedge y169 into shearing relation with an edge 170A0f the fixed blade between which the filling strand is carried as thelayV moves forwardly.

When theblade 166 is in closed position with the blade 165, the strandhas been engaged therebetween and cut olf on the side of the fabric fromwhich it was drawn into the shed. A spring 171 extending from a lug 17 2at the forward end of the movable blade 166 and hooked into a lug 173carried by a fixed frame member acts to hold the pivoted blade normallyout of operative relation until it is forced into its cutting positionVrthe last laid pick afterithas been beaten up into position, this pickbeing indicated at This hook is pivoted at 182 to a fixed portion of themachine and is provided with' a laterally extending pin 183. VExtendingforwardly from the lay in yalinement with this hook 180, as best shownin Figure 1,

is acam element 184 having` `aicam block 185. This block when the layisin its forward position rides beneath the pin 183 of the hook andraises it7 causing the hook to rock about itsy pivot 182, thus raisingits extremity 181 from back of the strand Zz so as topermit a succeedingpick which is being beaten up in this forward motion of the lay to beyplaced in position to' be engaged by thel extremity 181 when theretraction of the lay permits this end to fall by its own weight intoposition back of the pick.

A shown in Figure 2, one or more fabric strands c are used as theextreme warp strands from which the fabric 1s made and the hook ispositioned to engage the pick between this marginal warp or warps andthose in the main body of the fabric. These marginal strand or strandsare used to effect a tying 'of the ends of the picks inV positionthese'warp strands holding morer tightly tothe picks than. do the warpstrands of paper from which the body of the fabric is formed. Y

Having thus described an embodiment of this invention, it should beevident to those skilled in the art that various changes andmodifications might be made therein without departing from its spirit orscope as de fined by theappended claims. K f

I claim:

1. In combination with reed7 means for laying individual picks of strandmaterial, and means for moving said reed to beat up each pick as laid,of a member normally biasedto engage the last pick adjacent to one endafter each beating 'operation to retain said end from unraveling, andmeans actuated by the movement of said reed at each beating movement forremoving said member to permit a succeeding pick beaten up to bepresented in position to be engaged thereby.

2. In combinationv with a reed, meansfor l'laying individual picks, andmeans for moving said reed tobeat up the picks, of av hook normallybiased to engage back of each pick adjacent to one end after it has beenbeaten up andserving to prevent unraveling thereof, andan elementmovable with said reedV and engaging and removing said hook from itsbiased position duringthe beating movement, to permit a succeeding pickto'- be brought into position to be engaged by said hook.

In testimony whereof I havealiixed my signature.`

" f EARL F. BALDVIN.

